Official NHA Assessment

Race 7: FOR HOSPITALITY BOOKINGS CALL 0116811796 WORK RIDERS MAIDEN PLATE (For all Maidens)

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Line Horse
Heroic Act
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Blurred Vision       3    60.0    1    0.00     3.5   66    68           68    +2
2    Alakanani            4    60.0    2    0.75     1.5   57    78           78    +21
3    Heroic Act           3    60.0    3    1.25     3.5   74    74           74    +0
4    Brigham              3    60.0    4    4.25     3.5   70    70           70    +0
5    Urquhart Castle      4    60.0    5    14.00    1.5   30    72           72    +42
6    Gold De Grace        4    60.0    6    18.75    1.5   57    72           72    +15
7    Gift Of Royal        3    60.0    7    21.25    3.5   69    68           68    -1
99   Santiago's Pride     3    60.0    99   0.00     3.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blurred Vision 66 56 68 -12 3.5 -
2 Alakanani 57 59 78 -19 1.5 -
3 Heroic Act Line 74 65 74 -9 3.5
4 Brigham 70 74 70 +4 3.5 -
5 Urquhart Castle 30 37 72 -35 1.5 -
6 Gold De Grace 57 51 72 -21 1.5 -
7 Gift Of Royal 69 58 68 -10 3.5 -
99 Santiago's Pride - 76 68 +8 3.5 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points